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Biological Motivation

Biological Motivation. Chapter 6 Key Terms: Motivation, Homeostasis, Drive Reduction Theory, Hypothalamus. Motivation. Define the following: Motivation Biological What might biological motivation mean? Examples? . Homeostasis.

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Biological Motivation

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  1. Biological Motivation Chapter 6 Key Terms: Motivation, Homeostasis, Drive Reduction Theory, Hypothalamus

  2. Motivation • Define the following: • Motivation • Biological • What might biological motivation mean? • Examples?

  3. Homeostasis • Tendency of all organisms to correct imbalances and deviation from their normal state • Example: • Fever/sweating

  4. Hunger • Lateral Hypothalamus: makes us eat • More active when cold • Ventromedial Hypothalamus: makes us stop eating • More active when hot

  5. Glucostatic Theory • Hypothalamus monitors blood glucose • BG drops, LH stimulated • Insulin released • After meal: liver secretes glucagon

  6. Set-Point Theory • Set-Point: weight around which day-to-day weight fluctuates • If VMH is destroyed, you will not eat until you explode

  7. Obesity • Dr. Stanley Schachter • Obese people respond to external cues for eating • Cracker & Almond experiments

  8. Drive Reduction Theory • Clark Hull (1943) • All motivation comes from physiological needs

  9. Pulling it Apart • Not all drives have physiological origins • Harry Harlow monkey study • Pleasure centers in the brain are drives for stimulation

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